Every year in the U.S. over three million unintended pregnancies occur. About 1.3 million end in abortions. But with emergency contraceptive pills (EC) taken within 72 hours of unprotected sex the number of unintended pregnancies might actually be cut in half. Thus, the widespread easy availability of EC could constitute one of the most important advances in birth control in the last 40 years. Yet, there remains strong religious opposition to EC, mostly from the Roman Catholic Church.